US 12,315,926 B2
Preparation method and application of multifunctional interface layer modified composite zinc cathode based on zinc blende
Shangyong Lin, Changsha (CN); and Shuang Zhou, Changsha (CN)
Assigned to CENTRAL SOUTH UNIVERSITY, (CN)
Filed by CENTRAL SOUTH UNIVERSITY, Changsha (CN)
Filed on Jun. 6, 2024, as Appl. No. 18/735,247.
Claims priority of application No. 202311408702.9 (CN), filed on Oct. 27, 2023.
Prior Publication US 2025/0140850 A1, May 1, 2025
Int. Cl. H01M 4/58 (2010.01); H01M 4/04 (2006.01); H01M 4/1397 (2010.01); H01M 4/62 (2006.01); H01M 10/36 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/5815 (2013.01) [H01M 4/04 (2013.01); H01M 4/0404 (2013.01); H01M 4/1397 (2013.01); H01M 4/623 (2013.01); H01M 10/36 (2013.01); H01M 2004/028 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A preparation method of a multifunctional interface layer modified composite zinc cathode based on zinc blende, comprising the following steps:
S1, conducting ball milling on zinc blende after crushing it to obtain a zinc blende powder;
S2, mixing the zinc blende powder with a solvent, conducting wet screening through a sieve, collecting and drying it to obtain a wet-screened zinc blende powder;
S3, adding the above wet-screened zinc blende powder into a certain concentration of zwitterionic surfactant solution and stirring it for a period, after suction filtration and drying, a graft modified wet-screened zinc blende powder is obtained;
S4, mixing the above-mentioned graft modified wet-screened zinc blende powder with a binder in a certain proportion, and then adding an organic solvent into it to make a slurry; and
S5, uniformly coating the above slurry on a surface of a zinc metal cathode, and then conducting a drying treatment to obtain a composite zinc cathode modified by the multifunctional interface layer, wherein a zwitterionic surfactant used in the zwitterionic surfactant solution of S3 is a betaine surfactant.